Home / 31,500.38-47,251.48-8,126.81

Finding the Fourth Proportional to 31,500.38, 47,251.48 and 8,126.81

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Solution

The fourth proportional to 31,500.38, 47,251.48 and 8,126.81 is: 12,190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,500.38 : 47,251.48 = 8,126.81 : x
  2. Step 2: Convert to fraction form
    31,500.38/47,251.48 = 8,126.81/x
  3. Step 3: Cross multiply
    31,500.38x = 47,251.48 × 8,126.81
  4. Step 4: Simplify right side
    31,500.38x = 384,003,897.99
  5. Step 5: Solve for x
    x = 384,003,897.99/31,500.38
  6. Step 6: Final answer
    x = 12,190.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.